The Wollensak 75mm f1.9 Oscillo-Raptar was originally designed for close-up imaging of oscilloscope displays, so it's not really meant for "general purpose" photography... but so what? You can do what you want, even if things end up looking kind of goofy. This lens will not cover 4x5- it will definitely cover 6x9cm medium format or smaller. Glass is relatively clean, with a few light cleaning marks, light haze. The 3M Wollensak Pi-Alphax shutter (made for Hewlett Packard!) is in good working order, though it's worth noting that- by design- speeds only go up to 1/50s. Retaining ring is included.